CN
- Polymorphic transformation towards formation of nanotubes by self-assembly of an achiral molecule.
Polymorphic transformation towards formation of nanotubes by self-assembly of an achiral molecule.
Nanoscale (2015-10-16)
Shuai Wang, Yajun Zhang, Yijun Xia, Bo Song
PMID26459964
ABSTRACT
In this paper, nanotubes with a uniform diameter were prepared by self-assembly of an achiral azobenzene-containing fatty acid. The polymorphic transformation of the assemblies during the cooling process was systematically studied. By controlling the incubation temperature, different morphologies, such as membranes, stripes, helical ribbons and tubes, were all obtained in our experiment. These elements were all predicted by Selinger et al. in the theoretical model of the formation of nanotubes. To the best of our knowledge, this is the first experimental example to fully support their theory.
MATERIALS
Product Number
Brand
Product Description
Sigma-Aldrich
Sodium hydroxide, anhydrous, free-flowing, Redi-Dri™, reagent grade, ≥98%, pellets
Sigma-Aldrich
Hydrochloric acid, puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., fuming, ≥37%, APHA: ≤10
Sigma-Aldrich
Sodium hydroxide, puriss. p.a., ACS reagent, reag. Ph. Eur., K ≤0.02%, ≥98%, pellets
Sigma-Aldrich
Sodium nitrite, puriss., meets analytical specification of Ph. Eur., BP, USP, FCC, E 250, 99-100.5% (calc. to the dried substance)
Sigma-Aldrich
Hydrochloric acid, meets analytical specification of Ph. Eur., BP, NF, fuming, 36.5-38%
Sigma-Aldrich
Sodium hydroxide, puriss., meets analytical specification of Ph. Eur., BP, NF, E524, 98-100.5%, pellets